"use strict";
//5.数组
let arr = [10, 20, 30, 40];
arr.push(50);
// arr.push("zifuchuang");//error
let arr2 = ["王五", "马六", "张三"];
// arr2.push(29);//Error
//泛型数组写法
let arr3 = [1, 2, 3, 4];
arr3.push(99);
// arr3.push(true);//Error
//6.元组  数组的数据类型数据长度是确定已知的.
let tuple1;
// tuple1=["laoxie",18];//error 个数不匹配
tuple1 = ["老谢", 18, true];
